CN2076193U - Double-ecentric butterfly valve with metal rigid seal - Google Patents
Double-ecentric butterfly valve with metal rigid seal Download PDFInfo
- Publication number
- CN2076193U CN2076193U CN 90222388 CN90222388U CN2076193U CN 2076193 U CN2076193 U CN 2076193U CN 90222388 CN90222388 CN 90222388 CN 90222388 U CN90222388 U CN 90222388U CN 2076193 U CN2076193 U CN 2076193U
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- China
- Prior art keywords
- metal
- valve plate
- seal
- valve
- ring
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
Disclosed is a double-eccentric butterfly valve with a metal rigid seal. The utility model is characterized in that a valve plate is of double eccentricity, and a seal surface is of spherical surface; the metal seal ring is formed by a stainless steel ring in the form of a C-shaped or a U-shaped being internally coated with an annular spring; a metal rigid seal device comprises the spherical seal surface of the valve plate and the metal seal ring which is arranged on a valve body. The utility model which has the advantages of stable operation, labour saving, and reliable seal performance is suitable for the liquid transporting pipelines in a power generating plant, a metallurgy industry, and a city heat supply department. The range of application of the utility model is that temperature is lower than 450 DEG C, and pressure is lower than 4 mpa.
Description
The utility model relates to a kind of metal hard-sealing double eccentric butterfly valve.
In known technology, the metal hard-sealing double eccentric butterfly valve is made up of valve body, valve plate, rotating shaft part and metal o-ring.But this metal o-ring can only be applicable to the sealing under pressure≤1.6MPa, the temperature≤350 ℃ situation.
The purpose of this utility model is to overcome deficiency in the known technology, and a kind of novel metal hard sealing double eccentric butterfly valve is provided.
The utility model is realized by following measure:
The utility model valve plate is that two eccentric, sealing surface is a sphere, metal o-ring is made up of stainless steel coil and annular spring, annular spring is contained in the stainless steel coil of the c-shaped or U-shaped in cross section, the spherical sealing surface of valve plate cooperates with the metal o-ring on being contained in valve body, constitutes the metal hard-sealing device.
Another measure of the present utility model is that to be used for fixing the axis of the fixing pin of valve plate and rotating shaft parallel with the base of valve plate and be positioned at the neat seam place of rotating shaft and valve plate axis hole.
The utility model compared with prior art, its advantage is to carry and stable working applicable to pressure≤4MPa, temperature≤450 ℃ hot fluid medium, sealability is more reliable.
Description of drawings:
Fig. 1 is a generalized section of the present utility model;
Fig. 2 is the metal o-ring structural representation of C shape for the cross section of stainless steel coil;
Fig. 3 is the metal o-ring structural representation of U-shaped for the cross section of stainless steel coil;
Fig. 4 is valve plate and fixing pin position view.
Below in conjunction with description of drawings embodiment of the present utility model.
The utility model is the axis hole that up/down perforation is arranged on valve body 1, goes up rotating shaft 15 with bearing 11 and 12 supportings in the upper shaft hole, graphite packing 13 is housed on the diameter of axle of rotating shaft on the bearing 12 also compresses with gland 14.Last rotating shaft and valve plate 2 are fixing by the fixing pin 8 of band tapering, the axis of fixing pin is parallel with the base of valve plate and be positioned at the neat seam place of rotating shaft and valve plate axis hole, when valve plate was opened and closed, fixing pin only bore axial pressure, with the diameter and the quantity that reduce fixing pin and improve working life.In the valve body lower portion through hole, by bearing 16 supporting lower rotary shafts 6, lower rotary shaft is fixed on the valve plate by locating stud 7, and lower rotary shaft is compressed by bottom cover 4.Metal o-ring is made up of stainless steel coil 3 and spring 5, and spring places in the stainless steel coil ringwise, and the cross section of stainless steel coil can be the stainless steel coil 3-I (as Fig. 2) of C shape or the stainless steel coil 3-II (as Fig. 3) that the cross section is U-shaped.Metal o-ring is contained on the valve seal seat and is dead admittedly by flange 10 and fastening screw trip bolt, and Graphite pad 9 is set between flange and the valve body.Owing in the stainless steel coil annular spring is housed, the elasticity of metal o-ring is improved greatly, can prevent the permanent deformation of stainless steel coil under high pressure, high temperature media, thereby improve the withstand voltage resistance to heat of metal o-ring.Valve plate is that two eccentric, sealing surface of valve plate is a sphere.The center countershaft center line that the two off-centre of so-called valve plate are valve plate working seal faces axially and is radially having an eccentric distance e respectively
1And e
2The sphere of the working seal face of valve plate is to be e with center and distance vertical and by the working seal face
1Point be that the centre of sphere is the sphere of radius with r.For example be 250 millimeters butterfly valve at nominal diameter, eccentric distance e
1Be 30 millimeters, e
2Being 10 millimeters is 130 millimeters sealing surfaces of making sphere as valve plate with radius r.This valve plate, can guarantee equidistant even contact and improve seal pressure when closed with rotating shaft rotation and with metal o-ring, makes valve plate steadily enter, revolve tighter and tighter and reduce to screw in moment of torsion.
The utility model is specially adapted on the hot fluid transfer line of power station, metallurgy industry and city heat supply department.
Claims (3)
1, a kind of metal hard-sealing double eccentric butterfly valve, form by valve body, valve plate, rotating shaft part and metal o-ring, it is characterized in that valve plate is two eccentric, sealing surface is a sphere, metal o-ring is made up of stainless steel coil and annular spring, annular spring is contained in the stainless steel coil, and the spherical sealing surface of valve plate cooperates with the metal o-ring on being contained in valve body, constitutes the metal hard-sealing device.
2, butterfly valve according to claim 1, the cross section that it is characterized in that stainless steel coil is C shape or U-shaped.
3, butterfly valve according to claim 1 and 2, it is parallel with the base of valve plate and be positioned at the neat seam place of rotating shaft and valve plate axis hole to it is characterized in that being used for fixing the axis of fixing pin of valve plate and rotating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90222388 CN2076193U (en) | 1990-10-23 | 1990-10-23 | Double-ecentric butterfly valve with metal rigid seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90222388 CN2076193U (en) | 1990-10-23 | 1990-10-23 | Double-ecentric butterfly valve with metal rigid seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2076193U true CN2076193U (en) | 1991-05-01 |
Family
ID=4900340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90222388 Expired - Lifetime CN2076193U (en) | 1990-10-23 | 1990-10-23 | Double-ecentric butterfly valve with metal rigid seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2076193U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102359608A (en) * | 2011-09-07 | 2012-02-22 | 中国船舶重工集团公司第七○四研究所 | Hard sealing double eccentric butterfly valve for S-shaped elastic double O-shaped metal sealing ring |
| CN103322211A (en) * | 2013-06-24 | 2013-09-25 | 浙江中德自控阀门有限公司 | Metal sealed butterfly valve without pin connection |
| CN103375596A (en) * | 2012-04-23 | 2013-10-30 | 维士威（上海）控制阀门有限公司 | Low-temperature welding double-eccentric aluminum butterfly valve |
| CN106641284A (en) * | 2015-10-28 | 2017-05-10 | 江苏海达船用阀业有限公司 | High-temperature-resistant double eccentric butterfly valve |
| CN107339447A (en) * | 2017-07-28 | 2017-11-10 | 鞍山拜尔自控有限公司 | Seamless stainless steel pipe heavy caliber valve seat manufacturing processing technic and valve seat |
| CN108496033A (en) * | 2016-01-29 | 2018-09-04 | 株式会社三国 | Valve gear and Waste Heat Recovery System |
-
1990
- 1990-10-23 CN CN 90222388 patent/CN2076193U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102359608A (en) * | 2011-09-07 | 2012-02-22 | 中国船舶重工集团公司第七○四研究所 | Hard sealing double eccentric butterfly valve for S-shaped elastic double O-shaped metal sealing ring |
| CN103375596A (en) * | 2012-04-23 | 2013-10-30 | 维士威（上海）控制阀门有限公司 | Low-temperature welding double-eccentric aluminum butterfly valve |
| CN103322211A (en) * | 2013-06-24 | 2013-09-25 | 浙江中德自控阀门有限公司 | Metal sealed butterfly valve without pin connection |
| CN106641284A (en) * | 2015-10-28 | 2017-05-10 | 江苏海达船用阀业有限公司 | High-temperature-resistant double eccentric butterfly valve |
| CN108496033A (en) * | 2016-01-29 | 2018-09-04 | 株式会社三国 | Valve gear and Waste Heat Recovery System |
| US10787993B2 (en) | 2016-01-29 | 2020-09-29 | Mikuni Corporation | Valve device and exhaust heat recovery system |
| CN107339447A (en) * | 2017-07-28 | 2017-11-10 | 鞍山拜尔自控有限公司 | Seamless stainless steel pipe heavy caliber valve seat manufacturing processing technic and valve seat |
| CN107339447B (en) * | 2017-07-28 | 2023-10-20 | 鞍山拜尔自控有限公司 | Manufacturing and processing technology of large-caliber valve seat of stainless seamless steel pipe and valve seat |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |